循环检查按钮的标签

Question

我是新来的ObjC。我有一个方法，我称之为

-(IBAction)playSound:(id)sender; 

控制器类如果我想要写一个for循环，检查我的每个四个按钮（在故事板已连接）的标签填写方法，我会怎么做那？我试图让按钮点击播放声音。请在你的回答中描述。

Answer 1

-(IBAction)playSound:(id)sender 
{ 
    UIButton *button = (UIButton *)sender; // this is the button that has been pressed 
    if (button.tag == 0) { 
     // Play song for button 0 
    } else if (button.tag == 1) { 
     // Play song for button 1 
    } // ... 
} 

或者

-(IBAction)playSound:(id)sender 
{ 
    UIButton *button = (UIButton *)sender; // this is the button that has been pressed 
    NSString *songName = [songs objectAtIndex:button.tag]; // songs is an array 
    // Play song 
}